Earthquake with magnitude of ML 0.7 on date 07-12-2021 and time 23:41:24 (Italy) in region 6 km W Sefro (MC)

A magnitude ML 0.7 earthquake occured in region: 6 km W Sefro (MC), on

  • 07-12-2021 22:41:24 (UTC)
  • 07-12-2021 23:41:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.122, 12.878 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sefro MC 7 422 422
Nocera Umbra PG 7 5839 6261
Serravalle di Chienti MC 8 1070 7331
Fiuminata MC 9 1402 8733
Pioraco MC 11 1134 9867
Valtopina PG 12 1398 11265
Muccia MC 14 915 12180
Gualdo Tadino PG 14 15208 27388
Esanatoglia MC 16 2034 29422
Camerino MC 16 6974 36396
Pieve Torina MC 17 1458 37854
Monte Cavallo MC 17 145 37999
Castelraimondo MC 18 4587 42586
Pievebovigliana MC 18 866 43452
Matelica MC 19 9981 53433
Fiordimonte MC 20 202 53635

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Foligno (57155 inhabitants)
40 Km E of Perugia (166134 inhabitants)
65 Km N of Terni (111501 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
81 Km S of Fano (60888 inhabitants)
85 Km NW of Teramo (54892 inhabitants)
88 Km S of Pesaro (94582 inhabitants)
89 Km E of Arezzo (99543 inhabitants)
96 Km NW of L'Aquila (69753 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.7 2021-12-07
22:41:24
43.1222 12.8778 10 2021-12-07
23:35:58
Sala Sismica INGV-Roma 98259421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-07 22:41:24 ± 0.06
Latitude 43.1222 ± 0.0027
Longitude 12.8778 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98259421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 276
Semi-minor axis of confidence ellipse (meter) 208
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 173
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.24012
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 98259421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-07 23:35:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2021-12-07T22:42:06.08 3.0 undecidable manual S 1.93 0
IV.APEC.HHZ. 2021-12-07T22:41:44.73 3.0 undecidable manual S 0.23 0
IV.FRON.EHZ. 2021-12-07T22:41:39.59 3.0 undecidable manual S -0.32 0
IV.CSP1.EHZ. 2021-12-07T22:41:33.79 0.6 undecidable manual S 97 0.2401 50 -0.06 97
IV.COR1.EHZ. 2021-12-07T22:41:32.16 3.0 positive manual P -2.77 0
IV.FDMO.HHZ. 2021-12-07T22:41:31.61 0.6 undecidable manual S 119 0.1754 118 -0.16 96
IV.ASSB.HHZ. 2021-12-07T22:41:31.73 0.6 undecidable manual S 244 0.179 118 -0.16 96
IV.SNTG.HHZ. 2021-12-07T22:41:30.47 0.6 undecidable manual S 19 0.1403 124 -0.15 97
IV.CSP1.EHZ. 2021-12-07T22:41:29.76 0.6 negative manual P 97 0.2401 50 0.02 97
IV.CESI.HHZ. 2021-12-07T22:41:29.94 0.6 undecidable manual S 171 0.1187 128 -0.01 100
IV.MML1.EHZ. 2021-12-07T22:41:28.65 0.6 undecidable manual S 97 0.0692 144 0.04 100
IV.FDMO.HHZ. 2021-12-07T22:41:28.55 0.6 negative manual P 119 0.1754 118 0.01 99
IV.ASSB.HHZ. 2021-12-07T22:41:28.70 0.6 undecidable manual P 244 0.179 118 0.1 97
IV.CESI.HHZ. 2021-12-07T22:41:27.65 1.0 undecidable manual P 171 0.1187 128 0.16 48
IV.SNTG.HHZ. 2021-12-07T22:41:27.97 0.6 undecidable manual P 19 0.1403 124 0.1 98
IV.MML1.EHZ. 2021-12-07T22:41:26.91 0.6 negative manual P 97 0.0692 144 0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHE. ML:0.4 3.3973275E-5 1.0624 AML other m 2021-12-07T22:41:27.90
IV.MML1.EHN. ML:0.5 4.3738455E-5 0.1152 AML other m 2021-12-07T22:41:29.24
IV.MML1.HNE. ML:1 0.0001251032 0.704 AML other m 2021-12-07T22:41:26.92
IV.MML1.HNN. ML:0.8 9.514017E-5 0.768 AML other m 2021-12-07T22:41:32.51
IV.CESI.HHE. ML:0.5 3.6156235E-5 0.1408 AML other m 2021-12-07T22:41:30.07
IV.CESI.HHN. ML:0.3 1.80991165E-5 0.1024 AML other m 2021-12-07T22:41:30.25
IV.CESI.HNE. ML:1.1 0.00011767559 0.5888 AML other m 2021-12-07T22:41:28.26
IV.CESI.HNN. ML:1 9.3137815E-5 0.4224 AML other m 2021-12-07T22:41:28.44
IV.SNTG.HHE. ML:0.2 1.5633204E-5 0.1152 AML other m 2021-12-07T22:41:30.93
IV.SNTG.HHN. ML:0.2 1.496169E-5 0.128 AML other m 2021-12-07T22:41:30.74
IV.SNTG.HNE. ML:1.1 0.0001216296 1.0368 AML other m 2021-12-07T22:41:37.01
IV.SNTG.HNN. ML:1 8.778253E-5 0.5504 AML other m 2021-12-07T22:41:27.20
IV.FDMO.HHE. ML:0.6 2.815426E-5 44.0576 AML other m 2021-12-07T22:41:06.14
IV.FDMO.HHN. ML:0.4 2.2139435E-5 1.9328 AML other m 2021-12-07T22:41:28.71
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download